Improvement in heating-drums



UNITED STATES PATENT OFFICE.

GEORGE W. SMITH, 1a, or KENTLAND, INDIANA.

IMPROVEMENT IN HEATlNG-DRUMS.

Specification forming pait of Letters Patent No. 148,516., dated March10, 1874; application filed January 31,1874.

To all whom it may concern:

Be it known that I, GEORGE W. SMITH, (T.,) of Kentland, in the county ofNewton and State of Indiana, have invented a new and valuableImprovement in Stove-Drums; and I do hereby declare that the followingis a full, clear, and exact description of the construction andoperation of the same, reference being had to the annexed drawingsmaking a part of this specification, and to the letters and figures ofreference marked thereon.

Figure 1 of the drawings is a representation of a vertical section of mystove-drum. Fig. 2 is a transverse horizontal section of same. Fig. 3 isa detail view, showing the box D.

This invention has relation to stove-drums, through which heat isconducted on its way from a stove to the chimney, for the purpose ofutilizing such. heat for warming rooms.

The nature of my invention consists in a heatingdrum having acold-airbox arranged diametrically across it inside, which forms an ascendingand a descending passage for the heated products of combustion, incombination with passages for cold air to circulate through the saidair-box, as will be hereinafter explained, whereby a very largeheat-radiating surface is obtained in a comparatively small drum.

The'followiug is a description of my invention:

In the annexed drawings, A designates the outer shell of the drum, whichmay be cylin drical and provided with a conical top, B, or it may be ofany other suitable shape. The lower end of this shell A is open andadapted to fit on a stove, so that the heat therefrom will circulatethrough the flue-spaces b b and escape into the chimney through the pipe0.

G designates a bottom plate with a crescentshaped opening, I), throughit for the heat to This box D is closed on top, and has two outlets, aa, leading from it through the shell A,

for the escape of heated air into the room.

If desired, the opening 0 may be provided with a register, and the pipeC may be provided with a damper for regulating the heat.

It will be seen from the above description that the bottom plate G issubjected to the direct action of the flame and heated products,

. which heat will be communicated to the air as it enters the box Dthrough opening 0 also, that the side and top walls of the box D aresubjected to the products of combustion as they pass through the fines bb to the pipe 0. I thus obtain a very large radiating-surface.

When a more direct draft is desired, apipe, (I, with a damper, e, in it,may lead from the upper end of flue 0 into the pipe 0.

WVhat I claim as new, and desire to scour by Letters Patent, is

In a stove-drum for heating purposes, the inner verticaldiametrically-arranged box D, provided withair inlet and outlet passages0 a, a and forming flues 0 W, in combination with the bottom plates G Gand opening I), substantially as specified.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses.

GEORGE W. SMITH, (T.)

Witnesses:

MADISON NnwroN, JNo. B. OoNNER.

